#转义字符 \
print('转义字符: \\')
print('I\'m ok.')
print("I\'m 'Iron Man'")
print('I\'m learning\nPython.')
print('\\\n\\')

#不转义 前加r
print('不转义 前加r')
print(r'\\\n\\')
print(r'I\'m learning\nPython.')

#多行输出''' '''
print('多行输出:\'\'\'  \'\'\'')
print('''line1
line2
line3

line5
''')
print(r'''line1
line2
line3

line5
''')

#布尔类型
True
False
5<4

age=17
if age >= 18:
    print('adult')
else:
    print("teenager")

a=123
print(a,'\n')
a="你好"
print(a,'\n')